Kelsey measured the sides of a porch to determine if it is a right triangle. Does her porch with side lengths of 42 feet, 56 feet, and 70 feet form a right triangle?

Yes, because 42 squared + 56 squared not-equals 70 squared.
Yes, because 42 squared + 56 squared = 70 squared.
No, because 42 squared + 56 squared = 70 squared.
No, because 42 squared + 56 squared = 70 squared.